Nanotube Confinement Effects on Chemical Reactions
Summary
Inside carbon nanotubes and related one-dimensional nanocavities, guest molecules experience spatial restriction that fundamentally alters reaction kinetics, thermodynamics and selectivity. The narrow interior surfaces impose steric constraints and modify electronic distributions via van der Waals and electrostatic interactions, enabling stabilisation of transient species and directing stereochemical outcomes. Key parameters such as nanotube diameter, chirality and surface functionalisation determine the magnitude of these confinement effects. Applications span selective organic synthesis in nanoreactors, catalytic processes with enzyme-like precision and the fabrication of advanced materials. Advances in both computational modelling and experimental characterisation have revealed how tailored nanotube environments can emulate biological active sites, affording unprecedented control over migration, substitution and cycloaddition reactions. These insights open pathways towards more efficient, greener chemical production and the design of bespoke nanoscale catalysts.
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Nanotube Confinement Effects on Chemical Reactions publication trend
The graph below shows the total number of articles in nanotube confinement effects on chemical reactions across all publications each year (not limited to Nature Index journals).
Technical terms
Carbon nanotube (CNT): Cylindrical nanostructure formed by rolled graphene sheets, providing a confined one-dimensional channel for guest species.
Confinement effect: Modification of molecular behaviour and reaction pathways due to spatial restriction within a nanoscale cavity.
Quantum mechanics/molecular mechanics (QM/MM): Hybrid computational method combining quantum mechanical simulation of reactive centres with molecular mechanics for the surrounding environment.
Non-covalent interactions: Weak forces—van der Waals, electrostatic, π–π—that govern stabilisation and orientation of molecules within nanotubes.
Regioselectivity: The preferential formation of one structural isomer over others in a chemical reaction, influenced by the confined host environment.
References
- Stereoselective 1,2 migration of a boronate complex inside a nanoreactor: QM/MM study. Materials Today Communications (2023).
- Deciphering the Reactive Pathways of Competitive Reactions inside Carbon Nanotubes. Nanomaterials (2022).
- Computational Insights into the Regioselectivity of 1,3-Dipolar Cycloadditions inside Carbon Nanotubes. The Journal of Physical Chemistry C (2024).
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